forked from halide/Halide
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathImage.h
More file actions
225 lines (183 loc) · 6.72 KB
/
Image.h
File metadata and controls
225 lines (183 loc) · 6.72 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
#ifndef HALIDE_IMAGE_H
#define HALIDE_IMAGE_H
#include <stdint.h>
#include "Expr.h"
struct buffer_t;
namespace Halide {
class Type;
// The base image type with no typed accessors
class DynImage {
public:
DynImage(const Type &t, int a);
DynImage(const Type &t, int a, int b);
DynImage(const Type &t, int a, int b, int c);
DynImage(const Type &t, int a, int b, int c, int d);
DynImage(const Type &t, std::vector<int> sizes);
DynImage(const DynImage &other);
Expr operator()(const Expr &a) const;
Expr operator()(const Expr &a, const Expr &b) const;
Expr operator()(const Expr &a, const Expr &b, const Expr &c) const;
Expr operator()(const Expr &a, const Expr &b, const Expr &c, const Expr &d) const;
const Type &type() const;
int stride(int i) const;
int size(int i) const;
int dimensions() const;
unsigned char *data() const;
const std::string &name() const;
struct buffer_t* buffer() const;
void setRuntimeHooks(void (*copyToHostFn)(buffer_t *), void (*freeFn)(buffer_t *)) const;
void copyToHost() const;
void copyToDev() const;
void markHostDirty() const;
void markDevDirty() const;
bool hostDirty() const;
bool devDirty() const;
// Convenience functions for typical interpretations of dimensions
int width() const {return size(0);}
int height() const {return size(1);}
int channels() const {
if (dimensions() > 2)
return size(2);
else
return 1;
}
// Compare for identity (not equality of contents)
bool operator==(const DynImage &other) const {
return other.contents == contents;
}
private:
struct Contents;
std::shared_ptr<Contents> contents;
};
// The (typed) image type
template<typename T>
class Image {
private:
DynImage im;
T *base;
int s0, s1, s2, s3;
void init() {
im.markHostDirty();
base = (T*)im.data();
s0 = im.stride(0);
if (im.dimensions() > 1) s1 = im.stride(1);
if (im.dimensions() > 2) s2 = im.stride(2);
if (im.dimensions() > 3) s3 = im.stride(3);
}
public:
Image(int a) : im(TypeOf<T>(), a) {init();}
Image(int a, int b) : im(TypeOf<T>(), a, b) {init();}
Image(int a, int b, int c) : im(TypeOf<T>(), a, b, c) {init();}
Image(int a, int b, int c, int d) : im(TypeOf<T>(), a, b, c, d) {init();}
Image(DynImage im) : im(im) {
assert(TypeOf<T>() == im.type());
im.copyToHost();
init();
}
Image(std::initializer_list<T> l) : im(TypeOf<T>(), l.size()) {
init();
int x = 0;
for (auto &iter: l) {
(*this)(x++) = iter;
}
}
Image(std::initializer_list<std::initializer_list<T> > l) : im(TypeOf<T>(), l.begin()->size(), l.size()) {
init();
int y = 0;
for (auto &row: l) {
int x = 0;
for (auto &elem: row) {
(*this)(x++, y) = elem;
}
y++;
}
}
operator DynImage() const {
return im;
}
// Construct a load expression
Expr operator()(const Expr &a) const {
return im(a);
}
Expr operator()(const Expr &a, const Expr &b) const {
return im(a, b);
}
Expr operator()(const Expr &a, const Expr &b, const Expr &c) const {
return im(a, b, c);
}
Expr operator()(const Expr &a, const Expr &b, const Expr &c, const Expr &d) const {
return im(a, b, c, d);
}
// Actually look something up in the image. Won't return anything
// interesting if the image hasn't been evaluated yet.
T &operator()(int a) {
return base[a*s0];
}
T &operator()(int a, int b) {
return base[a*s0 + b*s1];
}
T &operator()(int a, int b, int c) {
return base[a*s0 + b*s1 + c*s2];
}
T &operator()(int a, int b, int c, int d) {
return base[a*s0 + b*s1 + c*s2 + d*s3];
}
T operator()(int a) const {
return base[a*s0];
}
T operator()(int a, int b) const {
return base[a*s0 + b*s1];
}
T operator()(int a, int b, int c) const {
return base[a*s0 + b*s1 + c*s2];
}
T operator()(int a, int b, int c, int d) const {
return base[a*s0 + b*s1 + c*s2 + d*s3];
}
// Convenience functions for typical interpretations of dimensions
int width() const {return im.width();}
int height() const {return im.height();}
int channels() const {return im.channels();}
int size(int i) const {return im.size(i);}
int dimensions() const {return im.dimensions();}
unsigned char *data() const {return im.data();}
};
class ImageRef {
public:
ImageRef(const DynImage &im, const std::vector<Expr> &idx) : image(im), idx(idx) {}
const DynImage image;
const std::vector<Expr> idx;
};
class UniformImage {
public:
UniformImage(const Type &t, int dims);
UniformImage(const Type &t, int dims, const std::string &name);
UniformImage(const UniformImage &);
void operator=(const DynImage &image);
unsigned char *data() const;
Expr operator()(const Expr &a) const;
Expr operator()(const Expr &a, const Expr &b) const;
Expr operator()(const Expr &a, const Expr &b, const Expr &c) const;
Expr operator()(const Expr &a, const Expr &b, const Expr &c, const Expr &d) const;
Type type() const;
const std::string &name() const;
int dimensions() const;
const DynImage &boundImage() const;
const Expr &size(int i) const;
const Expr &width() const {return size(0);}
const Expr &height() const {return size(1);}
const Expr &channels() const {return size(2);}
// Compare for identity (not equality of contents)
bool operator==(const UniformImage &other) const;
private:
struct Contents;
std::shared_ptr<Contents> contents;
};
class UniformImageRef {
public:
UniformImageRef(const UniformImage &im, const std::vector<Expr> &idx) : image(im), idx(idx) {}
const UniformImage image;
const std::vector<Expr> idx;
};
}
#endif